{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T16:51:33Z","timestamp":1792083093218,"version":"4.4.0"},"reference-count":13,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T00:00:00Z","timestamp":1787702400000},"content-version":"vor","delay-in-days":56,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T00:00:00Z","timestamp":1782864000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["esskajournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J. exp. orthop."],"published-print":{"date-parts":[[2026,7]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To compare perioperative, clinical, and functional outcomes between robotic\u2010assisted and conventional simultaneous bilateral total knee arthroplasty in a historical comparative cohort.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We conducted a retrospective historical comparative cohort study of patients undergoing simultaneous bilateral total knee arthroplasty at a single high\u2010volume arthroplasty centre between March 2013 and July 2025. Patients were stratified into a historical conventional cohort or a computed tomography\u2010based robotic\u2010arm\u2010assisted cohort. Outcomes included post\u2010operative haematocrit, blood transfusion, tourniquet ischaemia time, length of stay, post\u2010operative complications, and Forgotten Joint Score\u201012 values.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Sixty\u2010two patients were included: 41 in the robotic\u2010assisted group and 21 in the conventional group. Baseline preoperative haematocrit was higher in the robotic cohort. Post\u2010operative haematocrit was higher after robotic\u2010assisted surgery (31.74\u2009\u00b1\u20094.81% vs. 26.68\u2009\u00b1\u20094.41%,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001), whereas haematocrit drop did not differ significantly (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.295). The robotic\u2010assisted group had a lower transfusion requirement (14.6% vs. 76.2%,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001). After multivariable adjustment, conventional surgery remained associated with increased odds of post\u2010operative transfusion (adjusted odds ratio 20.78, 95% confidence interval 3.19\u2013135.24). Robotic assistance was also associated with shorter tourniquet ischaemia time and hospital stay. Post\u2010operative complications occurred only in the conventional cohort, although the difference was not statistically significant. Forgotten Joint Score\u201012 values were available for 34 of 62 patients (54.8%) at a median follow\u2010up of 47.9 months and did not differ significantly between groups (81.06\u2009\u00b1\u200925.76 vs. 74.83\u2009\u00b1\u200923.86,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.486).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Robotic\u2010assisted simultaneous bilateral total knee arthroplasty was associated with a more favourable perioperative profile than a historical conventional cohort, particularly regarding transfusion requirement, post\u2010operative haematocrit, tourniquet ischaemia time, and hospital stay. These findings should be interpreted cautiously because of temporal confounding, incomplete functional follow\u2010up, and limited sample size.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>Level III.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/jeo2.70897","type":"journal-article","created":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T15:19:27Z","timestamp":1787757567000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Robotic\u2010assisted simultaneous bilateral total knee arthroplasty was associated with a more favorable perioperative profile than a historical conventional cohort"],"prefix":"10.1002","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-0058-026X","authenticated-orcid":false,"given":"Eduardo","family":"Poblete","sequence":"first","affiliation":[{"name":"Faculty of Medicine Cl\u00ednica Alemana \u2010 Universidad del Desarrollo Santiago Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9441-6423","authenticated-orcid":false,"given":"Robert","family":"Partarrieu","sequence":"additional","affiliation":[{"name":"Faculty of Medicine Cl\u00ednica Alemana \u2010 Universidad del Desarrollo Santiago Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9453-3013","authenticated-orcid":false,"given":"Fernando","family":"Martin","sequence":"additional","affiliation":[{"name":"Faculty of Medicine Cl\u00ednica Alemana \u2010 Universidad del Desarrollo Santiago Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-6604-3122","authenticated-orcid":false,"given":"Nicol\u00e1s","family":"Piderit","sequence":"additional","affiliation":[{"name":"Faculty of Medicine Cl\u00ednica Alemana \u2010 Universidad del Desarrollo Santiago Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-5072-1895","authenticated-orcid":false,"given":"Andrea","family":"Marr\u00e9","sequence":"additional","affiliation":[{"name":"Faculty of Medicine Cl\u00ednica Alemana \u2010 Universidad del Desarrollo Santiago Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4099-3161","authenticated-orcid":false,"given":"Rafael","family":"Calvo","sequence":"additional","affiliation":[{"name":"Faculty of Medicine Cl\u00ednica Alemana \u2010 Universidad del Desarrollo Santiago Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6366-466X","authenticated-orcid":false,"given":"David","family":"Figueroa","sequence":"additional","affiliation":[{"name":"Faculty of Medicine Cl\u00ednica Alemana \u2010 Universidad del Desarrollo Santiago Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,8,26]]},"reference":[{"key":"e_1_2_12_2_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-023-07523-8"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00402-022-04455-9"},{"key":"e_1_2_12_4_1","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.22.00167"},{"key":"e_1_2_12_5_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12891-023-06648-8"},{"key":"e_1_2_12_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2018.03.042"},{"key":"e_1_2_12_7_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.101B1.BJJ-2018-0564.R2"},{"key":"e_1_2_12_8_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12891-021-04027-9"},{"key":"e_1_2_12_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2013.12.010"},{"key":"e_1_2_12_10_1","doi-asserted-by":"publisher","DOI":"10.1097\/ALN.0b013e3181bfab7d"},{"key":"e_1_2_12_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-013-3156-7"},{"key":"e_1_2_12_12_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-014-3757-9"},{"key":"e_1_2_12_13_1","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-200706000-00009"},{"key":"e_1_2_12_14_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-011-1400-9"}],"container-title":["Journal 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